Changzhou Tongxing Steel Tube Co., Ltd. is specialized in producing seamless steel tubes. Our main products are structural seamless steel pipes, seamless fluid tubes, petroleum cracking seamless steel pipes, seamless boiler steel pipes and precision seamless steel tubes. The diameters ranges from 6mm to 168mm and the wall thickness is 0.7mm - 12mm. Our factory covers 60,000 square meters with the permanent assets of USD4,430,000. Employing 300 workers, 5 engineers, and 21 technicists, and we have four sets machines of 60 - 90 for punching holes, 13 sets of cold drawn machines, and 6 sets of straightening machines. Insisting on introducing top grade equipment and gather excellent experts, we can manufacture first rank products. Our company has got the ISO9001 authentication certificate of quality management system and the seamless boiler steel pipe production license.